Anyone know how this system works and where the sending / receiving units are located? I drove mine from Florida up to the N.C. mountains and after spending the night, at elevation in cold temperatures, the low pressure indicator was on. After driving a few miles the indicator went off - I apparently, correctly assumed that it was a temperature related factor.

I am really impressed that the system is sensitive enough to pick up a temperature related pressure drop.

 

I may be wrong here (what I heard, don't know for sure), but I'll go out on the limb anyway:

Transmission device is in the Tire-Stem. (I seem to recall something about 'you must ensure any new tires have the stem from the originals placed in it).
Reception device is in the Garage Door opener.

 

Your correct!

 

Our TPM light came on yesterday. We checked our tires and inflated them to the correct amount according to Chrysler Specs. The light would not go out. Went to the dealer today. He changed the pressure in the tires and said the light should go out shortly. Drove the car 2 hours - light is still on. Is this going to happen to us because the weather has changed from HOT to COLD? Have notified the Dealer he needs to get in touch with Chrysler to find out how to get this light out. ops:

 

Took the car out last night to dinner, the peculial looking (c'mon guys, you all know what that light looks like) TPM light was on. Temps here have dropped dramatically in the last couple of days. Checked pressure, both fronts were 25, both rears 27. Not where they needed to be but driveable.

Put air in this am per owner's manual, light went out ok.

Gonna have the curb abrasion repaired this week ($140 total). The wheel shop asked if these transmitters reset themselves after being reinstalled in the wheel. He said most transmitters (such as on the Audi) do, but that some used on Vettes do not.

Anybody know? I know at least one guy here had his wheels polished, another chromed, so there is some experience here with taking the stems out and reinstalling.

 

I had mine go on also (temp did drop to 49)--got home and checked them and the PSI was fine :evil: I think the monitors are VERY sensitive, but not sure why the light is on when the PSI (30) is the same as it was before the cold weather... :?:

 

On the 300M,Grand Cherokee and minivans we use a magnet that fits around the valve stem to reset sensors.This reset also tells the computer where the tire is located...front , rear,spare..The crossfire doesnt have this set up or overhead display so when the light comes on you have to check all tires.When you set tire psi's you must drive car to reset.The tire sensor is part of the valve stem and is held on by a nut it will reset itself on the crossfire or should!The goverment wants these sensors on all cars and chrysler will soon use the ABS wheel speed sensor as a trigger to save money.A tire with less air will turn slower and the ABS sensor will pick it up and turn on light.

 

There is a gltich in the Chrysler TPM system. The first day the temp dropped here the light came on. Took it to the dealer and they said one tire was a less than a pound low. The system is too sensitive, Chrysler will be changing the program, look for a forthcoming TSB

 

The tire was "only a pound low" when you got to the dealer,but unless you live right next door to the dealer, your tires and the air inside had warmed up and the pressure had increased a little. With the small volume of air in these tires it could rise as much as 4 pounds just from normal driving. It sounds to me like your TPM is working just fine.

 

Had mine come on once, after our first "cold" night last week. All 4 tires were about three pounds low. I had never checed them cold before this.

 

Move to California... no TPM light issues here.

 

I grew up in Gardena and Redondo Beach. Now there's way too many people for me. I think I'll stay right here.

 

If the stems are programmed to each car, how will the vehicle handle it if I buy wheels and tires for winter use? My dealer said I could order more valve stems for the new wheels at $45.00 each. OK, but will they work out of the box, or is there some programming function to be done for the new stems? He didn't say, and I never though to ask.

And will I have to do something in the spring when I change back the other wheels?

Thanks for any info you can give.

 

As we don't have Tyre pressuring monitoring on UK cars , I wonder if it may be simple to add it?. We have the universal transceiver which I understand is where it picks it up from. Maybe we could just buy the stems and have a laptop update the dash??

Maybe Crossfire Tech could help??

 

Every time we have a new low temp. I top off my tires, keeps that pesky
light from comming on every morning. Me thinks maybe we should have a high pressure light for when spring time comes. :lol:

 

They should just add a function that allows us to check the ACTUAL tire pressure from the dash.

 

My light came on when things finally started to cool off here (Arizona). I checked the tires (slightly warm), all were right on 30. Checked them the next morning, all were around 28, I filled them to the recommended cold pressures of 32 front and 33 rear. Haven't seen a light since, I think I am a fan of the system.

 

Yes, I am also a fan of the system. keeps me on my toes when it comes
to checking tire pressure. One of those things you should check often but useualy dont. I also agree with mightyjlr that the system should read out the actual pressure so you can tell the difforance between 2 lbs low and
no pressure at all. I do find myself at times ignoring the light on a cold mornings, but i have this little thought in the back of my mind the this light
better go off soon, then it does

 

It was about 60 degrees this morning in South Florida and when I started out the tire pressure indicator lit up It took about 1/2 hour on the highway but it did go out. Pretty interesting system